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  • 02월 19일 10시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제121회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Exploiting Diffusion Barrier and Chemical Affinity of Metal-Organic Frameworks for Efficient Hydrogen Isotope Separation

등록일
2018년 3월 12일 16시 37분 49초
접수번호
6646
발표코드
KCS.O-4 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 10시 : 39분
발표형식
구두발표
발표분야
KCS - Oral Presentation for 2018 DOW Chemical Korea Award
저자 및
공동저자
Jin Yeong Kim, Rafael Balderas-Xicohtenécatl1, Linda Zhang1, Sung Gu Kang2, Michael Hirscher1,*, Hyunchul Oh3,*, Hoi Ri Moon*
Department of Chemistry, Ulsan National Institute of Science and Technology, Korea
1Max Planck Institute for Intelligent Systems, Germany
2School of Chemical Engineering, University of Ulsan, Korea
3Department of Energy Engineering, Gyeongnam National University of Science and Technology (GNTECH), Korea
※ 국외소속으로 등록된 저자의 승인여부는 최소 3일이내 발표자 email로 알려드립니다.
승인 3건
Deuterium plays a pivotal role in industrial and scientific research, and is irreplaceable for various applications such as isotope tracing, neutron moderation, and neutron scattering. In addition, deuterium is a key energy source for fusion reactions. Thus, the isolation of deuterium from physico-chemically almost identical isotopic mixture is a seminal challenge in modern separation technology. However, current commercial approaches suffer from extremely low separation efficiency (i.e. cryogenic distillation, selectivity of 1.5 at 24 K), requiring a cost-effective and large-scale separation technique. In this presentation, we present a highly effective hydrogen isotope separation system based on metal-organic frameworks (MOFs) having the highest reported separation factor as high as ~26 at 77 K by maximizing synergistic effects of the chemical affinity quantum sieving (CAQS) and kinetic quantum sieving (KQS). For this purpose, MOF-74 system having high hydrogen adsorption enthalpies due to strong open metal sites is chosen for CAQS functionality and imidazole molecules (IM) are employed to the system for enhancing the KQS effect. To the best of our knowledge, this work is not only the first attempt to implement two quantum sieving effects, KQS and CAQS, in one system but also provides experimental validation of the utility of this system for practical industrial usage by isolating high-purity D2 through direct selective separation studies using 1:1 D2/H2 mixtures.

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